The correct way to learn how to use LoadRunner properly is to do the following:
1. Get formal training.
2. Ensure you have a mentor for your first few projects.
Based on your question it's very obvious those two things aren't in place.
PS I suggest marking my post as the solution and if possible I recommend this thread be closed by a mod. And possibly rename the title so that trained LoadRunner users don't actually think this is a general tips thread. (The questions are too basic for the answers to be considered tips, it's more just basic training knowledge)